Muscle deoxygenation in the quadriceps during ramp incremental 1 cycling: deep versus superficial heterogeneity 2 3 Dai Okushima, David C. Poole, Harry B. Rossiter, Thomas J. Barstow, Narihiko 4 Kondo, Etsuko Ohmae, Shunsaku Koga, 5 Applied Physiology Laboratory, Kobe Design University, Kobe, Hyogo, Japan; 6 Departments of Kinesiology and Anatomy and Physiology, Kansas State University, 7 Manha...

We studied the role of the sodium-potassium pump in erythrocytes of 12 patients with sickle cell anemia (SS). Ouabain-binding sites per cell and pump-mediated Rb/K uptake were significantly higher in SS patients than in white or black controls. Ouabainresistant Rb/K influx was also greater than in normal controls or patients with sickle cell trait. Deoxygenation of SS erythrocytes increased oua...

A newly designed capillary deoxygenator has been constructed by using microporous polypropylene hollow fibers sealed into an airtight plexiglass housing. Oxygenated red cell suspensions and hemoglobin solutions flowing through the hollow fibers were subjected to deoxygenation with a gas mixture composed of 95 percent N2 and 5 percent CO2 passed through the housing. At a given flow rate of the o...

Deoxygenation-induced cation movements in sickle cells were inhibited 80% to 85% by the anion transport inhibitor, 4,4’-diisothiocyano-2,2’disulfostilbene (DIDS). Morphologic sickling was not altered by DlDS treatment, demonstrating that morphologic sickling was not sufficient to produce cation leaks in sickle cells. DlDS inhibition of deoxygenationinduced cation flux was not affected when Irep...

Abstract Absorption by aqueous solutions of alkanolamines is the most mature technology for removing carbon dioxide (?? 2 ) from natural gas, off-gases power engineering, and other mixtures. The possible presence oxygen in gas mixture being treated or air leakage into absorption treatment system leads to oxidative degradation amine deactivation liquid with formation a wide range corrosion-activ...

The early time course of adaptation of pulmonary O(2) uptake (Vo(2)(p)) (reflecting muscle O(2) consumption) and muscle deoxygenation kinetics (reflecting the rate of O(2) extraction) were examined during high-intensity interval (HIT) and lower-intensity continuous endurance (END) training. Twelve male volunteers underwent eight sessions of either HIT (8-12 x 1-min intervals at 120% maximal O(2...

A convenient synthesis of sidechain-modified phytosterols is achieved via a temporary masking of the stigmasterol 5,6-alkene as an epoxide. Following performance of the desired modification, the alkene is regenerated through a mild deoxygenation. The approach is applied to the syntheses of β-sitosterol and campesterol acetate, and suggests a facile route to the (Z)-isomers of Δ22–23